As if the illegal embargo and the power infrastructure issues are unrelated 🙄

Human Rights Watch is part of The Human Rights Concern Troll Industrial Complex whose purpose is facilitating regime change.

Blackouts are certainly a thing, and for the middle class in USA that would be considered intolerable. However, for the poor in the USA who sometimes go without electricity for lack of payment, having access to healthcare and education in exchange for the occasional blackout might be worth the trade.

As for speaking out against the government, citizens may not be incarcerated for speaking out (unless it actually threatens the government such as Manning, Snowden, and Winner), other forms of control are used. Usually that means pervasive propaganda and pitting people against each other through the Culture War.

US has the highest incarceration per capita in the world, and it's far higher than Cuba. Meanwhile, the blockade of Cuba certainly does make things difficult for a small island. The fact that people of Cuba enjoy higher quality of life than Americans in many ways, shows how communism can persevere even under harshest conditions. Not the own you seem to think it is.